User Equipment BWP Dormancy Transition Logic

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Solution Overview

Problem

Existing communication systems face challenges in efficiently determining the appropriate Bandwidth Part (BWP) for non-dormancy behavior in wireless communication systems, particularly in transitioning from dormancy to non-dormancy behavior.

Innovation Solution

The proposed solution involves an apparatus, such as user equipment (UE), that receives downlink control information (DCI) signaling. The apparatus obtains an indication related to the dormancy behavior of a secondary cell (Scell) configured with multiple BWPs, including a dormant BWP and normal BWPs. If the indication signals a transition from dormancy to non-dormancy behavior, the apparatus determines a target BWP based on criteria such as priority order of normal BWPs, predefined BWP, legacy BWP indicator field, most recently active normal BWP, and the dormant BWP.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If explicit DCI signaling is used to indicate target BWP for non-dormancy behavior, then reliability of BWP determination is improved, but device complexity and signaling overhead increase

Engineering Contradiction:

ImproveBWP determination reliabilityVSAvoidsignaling processing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The UE autonomously determines the target BWP for non-dormancy behavior using pre-configured BWPs and determination criteria stored in its memory, without requiring explicit network signaling. The UE serves itself by evaluating criteria such as priority order, predefined BWP indices, or most recently active BWP based on stored configuration information.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The network pre-configures multiple BWPs including dormant BWPs and non-dormant BWPs with associated criteria (priority orders, BWP indices, activation conditions) before the UE enters dormancy. This preliminary configuration enables the UE to autonomously determine the appropriate target BWP when transitioning from dormancy without real-time network signaling.

Inventive Principle:

Principle #10Preliminary action

2Loss of energy

If the UE autonomously determines target BWP without explicit signaling, then signaling overhead is reduced, but determination precision may be compromised

Engineering Contradiction:

Improvesignaling overheadVSAvoidBWP selection accuracy

Core Design Contradiction:

Loss of energyVSMeasurement precision

Solution Approach 1:

The system changes the state of BWP configuration parameters (priority orders, BWP indices, activation conditions) to encode target BWP identification information. The UE interprets these parameter values according to pre-agreed criteria to accurately determine the target BWP without explicit signaling, maintaining precision through parameter encoding.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The pre-configured BWP parameters serve multiple functions: they define the BWP characteristics for dormancy, encode the target BWP identification information, and provide the criteria for autonomous determination. This multi-functionality eliminates the need for separate signaling while maintaining determination accuracy.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple criteria are used for target BWP determination, then adaptability of BWP selection is improved, but device complexity increases

Engineering Contradiction:

ImproveBWP selection adaptabilityVSAvoiddetermination logic complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The BWP determination process is segmented into distinct criteria (priority order evaluation, predefined BWP index matching, most recently active BWP identification). Each criterion operates independently and can be evaluated in sequence, simplifying the overall decision logic while maintaining adaptability through multiple selection options.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250203616A1User equipment, scheduling node, method for user equipment, and method for scheduling node

Publication Date: 2025.06.19 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

The disclosure relates to a communication device, a base station and respective methods for a communication device and a base station. More specifically, the base station transmits (S930) and the communication device receives (S1030) downlink control information, DCI, signaling. The DCI signaling includes (S1040) an indication that is related to the dormancy behavior of a secondary cell, Scell. The Scell is configured with a plurality of bandwidth parts, BWPs, and the plurality of BWPs includes a dormant BWP and one or more normal BWPs. If the indication indicates transitioning from dormancy behavior to non-dormancy behavior, a target BWP for performing non-dormancy behavior is determined (S1060). The determination of the target BWP is performed, in particular, in accordance with at least one of: a priority order of the one or more normal BWPs, a predefined or preconfigured BWP, a legacy BWP indicator field in the DCI signaling, a most recently active normal BWP, and the dormant BWP.